It was a huge carved into the rock gallery, which reported several smaller rooms. Shelves were also cut in the rock. There was, according to the head of the community, not less than six hundred thousand items, including original manuscripts, copies and prints. The ceilings were very high and it was difficult to know whether they were beautiful Doric columns support or their role is purely decorative. To the top shelf were the stairs. In the middle of the central gallery were several tables for readers. They were engaged in three inhabitants of the citadel.